<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>评论</title>
    <style>
        .content{
            width: 534px;
            height: 72px;
            overflow: auto;
            border: 1px solid #ccc;
            outline: none;
            padding-left: 2px;
        }
    </style>
</head>
<body>
    <section>
        <h1>网友评论</h1>
        <div class="content" contenteditable="true" tabindex="1" spellcheck="false" accesskey="q"></div>
        <button id="add" tabindex="2">提<mark>交评</mark>论</button>
    </section>
</body>
</html>